The Red Jumpsuit Apparatus and Three Days Grace are both awesome :) I don't know if they're the kind of music you like but they both have some kool songs ;D I'm not even going to try and list all the songs you could choose from :P but they're worth looking into if you want good lyrics, and a bit of rock. Plus, i think some of the songs could be do-able...like not too hard, but come on, you cant be that bad if you've already recorded two songs :P
Anyways...good luck with your band and i hope ya like my suggestions:)
Anyways...good luck with your band and i hope ya like my suggestions:)